/* 登录样式 */
.layout {
	position: absolute;
	width: 400px;
	height: 400px;
	left: 55%;
	top: 50%;
	margin-left: -200px;
	margin-top: -100px;
}

tr, td {
	padding-bottom: 15px;
}

button {
	width: 100px;
}